Sugar is the name of sweet-tasting carbohydrates that your body can convert into energy.
Sugar alcohols are also sweet-tasting. However, they have a different chemical structure, and your body does not absorb them as efficiently.
Both are found naturally in food and also added to processed items.
Although they’re used in similar ways, they exhibit varying effects on your digestion, blood sugar levels, and oral health.
This article explains the important differences between sugar and sugar alcohol.
Sugars are sweet-tasting carbs. On a chemical level, they comprise carbon, hydrogen, and oxygen atoms.
They’re naturally found in foods like fruits, vegetables, grains, and dairy products, as well as added to processed foods.
Simple sugars can be divided into two main categories — monosaccharides and disaccharides.
Monosaccharides are the simplest type of sugar and contain just one type of sugar molecule.
Glucose is the simplest sugar and your body’s preferred source of energy. It’s the sugar that’s measured in blood sugar tests. Other monosaccharides are fructose and galactose, which are metabolized into glucose (
The most common disaccharide is sucrose, which is also known as table sugar and made up of a glucose and fructose molecule. Meanwhile, lactose is found in milk and made up of a glucose and galactose molecule, and maltose is made up of two glucose molecules.
Sugar refers to the sweet-tasting carbs that your body uses for energy. They’re made up of single or paired molecules known as monosaccharides (glucose, fructose, and galactose) and disaccharides (sucrose, lactose, and maltose), respectively.
Sugar alcohols, also called polyols, are a type of carbohydrate whose structure resembles both sugars and alcohol.
Still, sugar alcohols do not contain ethanol, and they’re thus safe for people who prefer to avoid alcohol.
Given that they’re similar to sugar, they can activate the sweet receptors on your tongue and have a pleasing, cooling effect on the taste of foods (
However, they’re not as efficiently absorbed or digested as regular sugar and therefore contain fewer calories.
They’re found naturally in some fruits and vegetables, such as plums, strawberries, and avocado, and also made by processing regular sugars.
Sugar alcohols are often used as lower calorie sweeteners in sugar-free chewing gum and candies, as food additives in processed foods, and in toothpaste, certain medications, and laxatives.
Sugar alcohols have a structure similar to that of sugars but also contain an alcohol molecule. This means they taste sweet but are not absorbed and metabolized in the same way as sugar.
Sugar and sugar alcohols differ significantly in sweetness, calorie content, and digestion, as well as their effect on blood sugar levels and oral health.
Calories and sweetness
Sugar alcohols contain fewer calories than regular sugars.
Conversely, your body does not digest sugar alcohols efficiently.
However, most sugar alcohols pass through to your large intestine, where they’re fermented by gut bacteria.
Current recommendations advise that moderate doses of 10–15 grams per day are usually tolerated. However, sensitive people may need to avoid sugar alcohols, particularly sorbitol and maltitol, or reduce their intake to avoid symptoms (
Effect on blood sugar levels
Then, insulin transports the sugars into your body’s cells to either be converted into energy or stored (
Given that sugar alcohols are not efficiently absorbed, they have a much less significant effect on your blood sugar levels and thus a lower GI, with values ranging between 0–36 (
Therefore, sugar alcohols can be a good alternative for people with pre-diabetes, diabetes, or metabolic syndrome.
Sugar alcohols do not contribute to tooth decay, as the bacteria in your mouth are unable to ferment them (
Sugar alcohols are generally less sweet than sucrose and have fewer calories. They’re also less digestible, which may cause side effects in some people. On the other hand, sugar affects blood sugar levels more and may contribute to tooth decay.
Sugar and sugar alcohols are sweet-tasting carbs with slightly different chemical structures.
Sugar alcohols are generally less sweet and contain fewer calories than sugars. They also affect blood sugar levels less significantly, making them a suitable alternative for people with diabetes.
Additionally, they’re not linked to tooth decay and may even help prevent it.
However, unlike sugar, they’re not well absorbed by the body. This means that when they’re consumed in large quantities or by sensitive individuals, they can cause bloating, flatulence, stomach pain, and diarrhea.